I have tried multiple times to sign the petition and even created a new account with the site but it won't let me sign

InfoWorld is offline, for "scheduled maintenance"... right

All they need is the first person to die in an accident that happens after someone uses one of these apps to evade a checkpoint, and the lawsuits and bad publicity will push them to remove them. Hopefully they get smart before that happens. "Don't Be Evil" - risking innocent death vs. whatever theoretical argument? Be reasonable, and pull those apps.

I co-founded Wikipedia partner site http://en.wikibooks.org/ for exactly this type of use. There are some high school science books already on there which you can reference, or even better, have your students edit and expand themselves. This can be done with a whole class or just for a group of top students or for extra credit. I believe this is the best way to capitalize on the online aspect, not just passively reading someone else's material, but actively participating in creating and editing the learning texts.